Vertically displaced point

I am trying to position a point at the (pointed) bottom of an object. Rhino has drawn a dotted vertical line from the position I have selected. It wants to position the point at the top of this (spurious) dotted line.

Not sure how I fell into this situation, but it is a persistent problem. Maybe Rhino is automatically projecting new objects to a CP?

What is happening? How do I turn it off (whatever it is)

off and get back to normal operation?

Thank you for your insights.

Uncheck “Project” in the Object snap panel.